# FastZen vs AlarmCroc

The clearest difference is in-app purchases: AlarmCroc at none against FastZen's 3. AlarmCroc also leads on update cadence (every 2 days vs weekly). FastZen's advantage is iOS requirement (17.0 vs 26.1). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. FastZen sells 3 one-off in-app purchases. AlarmCroc asks for nothing beyond the download.

FastZen ships an update weekly, AlarmCroc every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | FastZen | AlarmCroc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (11 ratings)](https://appshunter.io/ios/app/alarmcroc/id6774842090/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 2 MB | 479 MB |
| Requires iOS | **17.0** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Dupin](https://appshunter.io/developer/1871474236) | [Dylan Morgan](https://appshunter.io/developer/1794374455) |

## What reviewers say

### FastZen

[App page](https://appshunter.io/ios/app/fastzen-fasting-timer/id6761484595)

This app helps you manage your fasting schedule with customizable timers and reminders. It offers a recurring weekly routine, a timer that remembers your progress, and a clear view of your active fast. Review your history and track your streaks, all while keeping your data private on your device.

**Highlights:** Customizable fasting schedules, Recurring weekly routine setup, Live Activities for active fast tracking, Detailed fasting history and streaks, No account, ads, or server sync, Custom Week one-time purchase

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Support development | $4.99 | one-time |


### AlarmCroc

[App page](https://appshunter.io/ios/app/alarmcroc/id6774842090)

This app helps heavy sleepers wake up by requiring them to complete a task before the alarm stops. It offers various missions like solving math problems or taking a photo, and includes features to block distracting apps and track morning habits.

**Highlights:** Mission-based wake-ups, App blocking, Streaks and badges, Morning insights, Home screen widgets, Unlimited alarms

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FastZen free?

FastZen is free to download, with in-app purchases available.

### Is AlarmCroc free?

AlarmCroc is free to download, with no in-app purchases.

### Do FastZen or AlarmCroc have ads?

Neither FastZen nor AlarmCroc shows ads.

### Which is updated more often, FastZen or AlarmCroc?

FastZen ships an update weekly, and AlarmCroc every 2 days. Most recently, FastZen was updated on October 7, 2026 and AlarmCroc on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*